Guo Yang

Homologous Fluorination Enables Asymmetric Dynamic Interfacial Coupling for Efficient and Sustainable Blade‐Coated Perovskite Solar Cells

Wenhuai Feng, Guo Yang, Youhui Zhang, Yuxuan Fang et autres

ABSTRACT Self‐assembled monolayers (SAMs) are indispensable hole‐transport interfaces in inverted perovskite solar cells (PSCs), yet conventional co‐assembly strategies based on symmetric strong interactions often suffer from excessive aggregation, limited adaptability, and insufficient interfacial robustness. Here, we developed a homologous fluorination‐enabled asymmetric interfacial …

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Effects of Bi and In on the Shear Strength and Thermal Aging Behavior of SAC387/Cu Solder Joints: A Machine Learning and Experimental Study

Lei Dai, Guo Yang, Qiliang Huang, Linkang Liao et autres

Kinetically Trapped High‐Density Interstitial Mn 2+ Enables Concentration‐Quenching‐Free Persistent Luminescence in CsCdCl 3 Perovskites

Qiudong Duan, Shuo Zhang, Zhenhua Song, Yuxuan Fang et autres

ABSTRACT Long‐persistent luminescence materials commonly suffer from concentration quenching at high dopant levels, limiting simultaneous optimization of luminescent centers and trap states. Herein, we report a kinetically controlled room‐temperature strategy for high‐density interstitial Mn 2+ doping in CsCdCl 3 perovskites. Using cetyltrimethylammonium …

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Synergistic Molecular Modulation via Coordination and Hydrogen Bonding for Efficient Perovskite and Tandem Solar Cells

Tao Zhang, Zehang Liu, Yonggui Sun, Taomiao Wang et autres

ABSTRACT Molecular additives offer a powerful route to control crystallization kinetics and homogenize component distribution in perovskite semiconductors. However, additives that integrate Pb‐related coordination and hydrogen‐bonding functionalities within a single molecular framework to jointly regulate crystallization evolution and defect chemistry remain largely …

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Supramolecular Chloride Reservoirs Enable Homogeneous Halide Distribution and Near‐Unity Blue Luminescence in Cs 4 PbBr 6 ‐CsPbBr 3 Heterostructured Perovskites

Yuqin Tan, Tian Tian, Huanyu Chen, Guo Yang et autres

ABSTRACT Blue‐emitting metal halide perovskites remain difficult to stabilize because mixed‐halide compositions suffer from halide heterogeneity, defect formation, and rapid phase segregation. Here, we report a supramolecular host engineering strategy that stabilizes mixed‐halide perovskites using a quaternary ammonium chloride‐functionalized cationic β‐cyclodextrin (C‐βCD). …

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Fluorinated Lead‐Chelating Molecules Boost Performance, Stability, and Safety of Hole Transport Layer‐Free Carbon‐Based Perovskite Solar Cells

Jun‐Xing Zhong, Min‐Chang Chen, Ying Tan, Yi Feng Xiao et autres

Abstract Hole transport layer‐free carbon‐based perovskite solar cells (HTL‐free C‐PSCs) hold promise for low‐cost, stable photovoltaics but suffer from poor interfacial charge extraction, inferior defect passivation, and unresolved environmental risk. Here, we reported a multifunctional interfacial engineering strategy using fluorinated lead‐chelating (FLC) …

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Fluorinated Lead‐Chelating Molecules Boost Performance, Stability, and Safety of Hole Transport Layer‐Free Carbon‐Based Perovskite Solar Cells

Jun‐Xing Zhong, M Chen, Ying Tan, Ying‐Tong Xiao et autres

Abstract Hole transport layer‐free carbon‐based perovskite solar cells (HTL‐free C‐PSCs) hold promise for low‐cost, stable photovoltaics but suffer from poor interfacial charge extraction, inferior defect passivation, and unresolved environmental risk. Here, we reported a multifunctional interfacial engineering strategy using fluorinated lead‐chelating (FLC) …

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Breaking the Efficiency‐Stability‐Sustainability Trilemma in all‐perovskite Tandem Solar Modules via Oxidative Blockchain Molecular Engineering

Guo Yang, Jinglin Sun, Xueqing Chang, Chao Yu et autres

Abstract Narrow‐bandgap (NBG) tin‐lead (Sn ‐ Pb) perovskites are vital for all‐perovskite tandem solar modules (TSMs), yet their commercialization remains limited by challenges in balancing efficiency, stability, and sustainability. Here, we presented an oxidation‐triggered blockchain molecular (BCM) interface engineering strategy, which modified …

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Effect of Solid Solution Treatment Routes on the Microstructure Configuration of a Third-Generation Ni-Based Superalloy

Guo Yang, Min Sun, Yanhui Chen, Haibo Long

The step and ramp heat treatments can improve the homogenization degree of the structure in superalloys. However, the comparison between them using the same temperate range and total holding time on the microstructure and the microstructural stability is still vague. The effects …

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Effect of Al2o3/Na2o Ratio on Structure, Elastic Modulus and Thermal Expansion of Na2o-Mgo-Al2o3-Sio2 Glasses Studied by Molecular Dynamics Simulations and Experiments

Guo Yang, Wenkai Gao, Zeyu Kang, Xue Ke Wu et autres

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Halogen Radical‐Activated Perovskite‐Substrate Buried Heterointerface for Achieving Hole Transport Layer‐Free Tin‐Based Solar Cells with Efficiencies Surpassing 14 %

Gengling Liu, Xianyuan Jiang, Yaorong He, Chun‐Hsiao Kuan et autres

Abstract Sn‐based perovskites have emerged as one of the most promising environmentally‐friendly photovoltaic materials owing to their low toxicity and exceptional optoelectronic properties. Nonetheless, the low‐cost production and stable operation of Sn‐based perovskite solar cells (PSCs) are still largely limited by the …

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Halogen Radical‐Activated Perovskite‐Substrate Buried Heterointerface for Achieving Hole Transport Layer‐Free Tin‐Based Solar Cells with Efficiencies Surpassing 14 %

Gengling Liu, Xianyuan Jiang, Yaorong He, Chun‐Hsiao Kuan et autres

Sn-based perovskites have emerged as one of the most promising environmentally-friendly photovoltaic materials owing to their low toxicity and exceptional optoelectronic properties. Nonetheless, the low-cost production and stable operation of Sn-based perovskite solar cells (PSCs) are still largely limited by the costly …

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